Modifier and Type | Field and Description |
---|---|
private byte |
g |
private byte |
n |
private byte[] |
P |
private byte |
s |
private byte[] |
T |
private byte[] |
workingIV |
private byte[] |
workingKey |
private byte |
x1 |
private byte |
x2 |
private byte |
x3 |
private byte |
x4 |
Constructor and Description |
---|
VMPCMac() |
Modifier and Type | Method and Description |
---|---|
int |
doFinal(byte[] out,
int outOff)
Compute the final stage of the MAC writing the output to the out
parameter.
|
java.lang.String |
getAlgorithmName()
Return the name of the algorithm the MAC implements.
|
int |
getMacSize()
Return the block size for this MAC (in bytes).
|
void |
init(CipherParameters params)
Initialise the MAC.
|
private void |
initKey(byte[] keyBytes,
byte[] ivBytes) |
void |
reset()
Reset the MAC.
|
void |
update(byte in)
add a single byte to the mac for processing.
|
void |
update(byte[] in,
int inOff,
int len) |
private byte g
private byte n
private byte[] P
private byte s
private byte[] T
private byte[] workingIV
private byte[] workingKey
private byte x1
private byte x2
private byte x3
private byte x4
public int doFinal(byte[] out, int outOff) throws DataLengthException, java.lang.IllegalStateException
Mac
doFinal leaves the MAC in the same state it was after the last init.
doFinal
in interface Mac
out
- the array the MAC is to be output to.outOff
- the offset into the out buffer the output is to start at.DataLengthException
- if there isn't enough space in out.java.lang.IllegalStateException
- if the MAC is not initialised.public java.lang.String getAlgorithmName()
Mac
getAlgorithmName
in interface Mac
public int getMacSize()
Mac
getMacSize
in interface Mac
public void init(CipherParameters params) throws java.lang.IllegalArgumentException
Mac
private void initKey(byte[] keyBytes, byte[] ivBytes)
public void reset()
Mac
public void update(byte in) throws java.lang.IllegalStateException
Mac
public void update(byte[] in, int inOff, int len) throws DataLengthException, java.lang.IllegalStateException
update
in interface Mac
in
- the array containing the input.inOff
- the index in the array the data begins at.len
- the length of the input starting at inOff.DataLengthException
- if there isn't enough data in in.java.lang.IllegalStateException
- if the MAC is not initialised.